html,
body {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -moz-user-select: none;
    /*火狐*/
    -webkit-user-select: none;
    /*webkit浏览器*/
    -ms-user-select: none;
    /*IE10*/
    user-select: none;
    /*选中文字时避免出现蓝色背景*/
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.box {
    width: 98vw;
    height: 100vh;
    position: relative;
    // overflow: visible;
    .box_header {
        width: 100%;
        height: 60px;
        background-color: white;
        position: fixed;
        top: 0;
        box-shadow: 3px 3px 3px #eaeaea;
        min-width: 1540px;
        z-index: 2;
        
        .box_header_content {
            width: 97%;
            height: 100%;
            margin: 0 auto;
            // display: flex;
            justify-content: space-between;

            .logo {
                width: 170px;
                height: 100%;
                background: url('../../assets/YiQixiuImage/log.png') 0 0/100% 100%;
                float: left;
            }

            .box_header_center {
                width: 500px;
                height: 100%;
                float: left;
                margin-left: 70px;
                ul {
                    width: 100%;
                    height: 100%;
                    display: flex;
                    justify-content: space-around;
                    line-height: 60px;
                    
                    li {
                        float: left;
                        cursor: pointer;
                    }

                    li:nth-child(1) {
                        font-weight: 600;
                    }

                    li:hover {
                        color: blue;
                    }
                    .ll{
                        position: absolute;
                        border-radius: 15px;
                        display: none;
                        background-color: white;
                        box-shadow: 1px 1px 10px 3px #ccc;
                        z-index: 1000;
                    }
                    .l1 {    
                        width: 100%;
                        height: 500px;
                        margin-left: -276px;
                        border-radius: 0;
                        
                    }
                    .l2 {
                        width: 920px;
                        height: 450px;

                    }
                    .l3{
                        width: 1200px;
                        height: 600px;
                        margin-left: -276px;
                    }
                    .l4{
                        width: 550px;
                        height: 380px;
                        margin-left: -250px;
                    }
                    .l5{
                        width: 1000px;
                        height: 500px;
                        margin-left: -250px;
                    }
                    .l6{
                        width: 600px;
                        height: 300px;
                        margin-left: -170px;
                        // display: block;
                        div{
                            width: 460px;
                            height: 210px;
                            margin: 40px auto;  
                        }
                    }
                    li:hover .ll {
                        display: block;
                        
                    }
                }

                // Hot标签
                .hot {
                    width: 25px;
                    height: 12px;
                    color: white;
                    font-weight: 600;
                    background-color: red;
                    font-size: 10px;
                    border-radius: 20px;
                    position: absolute;
                    left: 325px;
                    text-align: center;
                    top: 10px;
                }

                // 版权0风险 标签
                .copyright {
                    width: 60px;
                    height: 15px;
                    font-weight: 500;
                    background-color: rgb(249, 199, 108);
                    font-size: 10px;
                    border-radius: 15px 0 15px 0;
                    position: absolute;
                    left: 390px;
                    text-align: center;
                    line-height: 15px;
                    top: 6px;
                }

            }

            .box_header_input {
                width: 450px;
                height: 100%;
                float: left;
                margin-left: 100px;
                .header_search{
                    width: 100%;
                    height: 100%;

                    .header_search_border{
                        border: 1px solid blue;
                        border-radius: 10px 0 0 10px;
                        padding: 1px;
                        margin: 10px 0 0 0;
                        float: left;
                        position: relative;
                        .drop{
                            margin: 0 10px;
                            padding-right: 10px;
                            border-right: 1px solid #ccc;
                            font-size: 14px;
                            font-weight: 600;
                        }
                        .header_inp{
                            width: 250px;
                            height: 35px;
                            border: none;
                            outline: none;
                            
                        }
                        .icon-zhaoxiangji{
                            font-size: 26px;
                            font-weight: 600;
                            position: absolute;
                            right:5px;
                            top: 8px;
                            color: #ccc;
                        }
                    }
                    .header_btn{
                            // width: 100%;
                            width: 50px;
                            height: 40px;
                            background-color: blue;
                            border-radius: 0 10px 10px 0;
                            color: white;
                            border: none;
                            float: left;
                            margin-top: 10px;
                            .icon-sousuo{
                                font-size: 20px;
                                font-weight: 600;
                            }
                    }
                }
            }

            .box_header_right {
                width: 150px;
                height: 100%;
                float: right;
                line-height: 60px;
                text-align: center;
                position: relative;

                .anime {
                    img {
                        width: 300px;
                        height: 42px;
                        position: absolute;
                        right: 27px;
                        animation-name: identifier;
                        animation-duration: 2.5s;
                        animation-direction: alternate;
                        animation-iteration-count: infinite;
                        z-index: 9999;
                    }
                }
            }
        }
    }

    // 侧边栏部分
    .menu {
        width: 230px;
        height: 90%;
        position: fixed;
        ::-webkit-scrollbar{
            overflow-y: auto; /* 保持垂直滚动条显示 */
            rollbar-width: thin; 
        }
        /* Firefox 专有：隐藏滚动条 */
        scrollbar-width: none;
        
        z-index: 1;
        background-color: white;
        margin-top: -20px;
    }

    // 内容区域
    .box_content {
    
        height: 100%;
        margin: 80px 0 0 268px;
        
        .center {
            max-width: 1704px;
            min-width: 1080px;
            min-height: 200px;
            margin: 0 auto;
        }
    }

}


@keyframes identifier {
    0% {
        top: 50px;
    }

    50% {
        top: 60px;
    }

    100% {
        top: 50px;
    }
}